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		<title></title>
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<div style="border:1px solid black;width:100px;height:150px;overflow:auto">
This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text.</div><br>
<button>返回垂直滚动条的位置</button>
<p>向下移动滚动条,再次单击该按钮。</p>

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